Stock-controlling means for paper-making machines



Dec. 31, 1929.

J. R. sPOOR STOCK CONTROLLING MEANS FOR PAPER MAKING MACHINES Filed Nov.28, 1928 JO'EDAN 2 Sheets-Sheet 1 STUFF CH EST J. R. SPOOR Dec. 31, l929.

STOCK CONTROLLING MEANS FOR PAPER MAKING MACHINES Filed NO 2 1928 2Sheets-Shae} INVENTOR Jo/m E 5 0001" BY W W ATTORNE Patented Dec. 31,1929 UNITED STATES JOHN ROBERT 519003, 01? KALAMAZOO, MICHIGANSTOCK-CONTROLLING MEANS FOR PAPER-MAKING MACHINES Application filedNovember 28, 1928. Serial No. 322,350.

The objects of this invention are:

First, to provide a regulator that affords a simpleand eifective meansof controlling the consistency of the paper stock that is delivered tothe stuff chest of a paper making machine.

Second, to provide improved means for controlling the regulator formaintaining the weight of the paper stock.

This invention is a development and iniproveinent of the structure of myPatent No. 1,689,755, Oct. 30, 1928.

Objects pertaining to details and economies of operation andconstruction will definitely appear from the description to follow.

A machine embodying the features of my invention is illustrated in theaccompanying drawing, in which:

Fig. 1 is a diagrammatic elevation view of my complete paper stockregulator means.

Fig. 2 is a side elevation of my improved regulator for controlling theconsistency of wet paper stock, dotted lines indicating the gate and theoverflow partition part of the hopper being broken away to more clearlyillustrate the restricted discharge,

Fig. 3 is a top plan view of the regulating stuff chest showing mainlythe gate in a central position for controlling the overflow to thedischarge.

Fig. 4 is a vertical section taken on line 33 of Fig. 1 showing mainlythe spiral conveyor for retarding the flow of stock, the inlet pipethereto showing a lateral discharge to prevent the splashing of'thepaper stock.

Fig. 5 is a detail sectional plan view taken on line 5-5 of Fig. 2.

The parts will be identified by their numerals of reference which arethe same in all the views.

1 is a Jordan beater of the usual construction. 2 is the supply chestfor the Jordan beater. 21 is the stockpipe delivering into the supplychest 2. 3 is the delivery pipe from the Jordan beater. 4*istheregulating stuii chest to which pipe 3 delivers.

The regulating stuff chest 4 is provided with a dam partition 41 forminga supply of compartment 42 which overflows the dam partition 41. A gate43 is provided on the top of partition 41. 44 is the overflowcompartment with the overflow pipe 45 delivering from the bottomthereof. 46 is the regulating compartment with a hopper 47 at the topdelivering outwardly through pipe 48 to the controlling hopper.

5 is the balanced controlling hopper. 6 is the delivery hopper. 7 is thepipe from the delivery hopper to the paper machine. 8 is the stuff chestof a paper making machine receiving stock through pipe 7 The balancedhopper 5 is supported from the bracket 9 beneath the regulating stuffchest 4.

10 is the bifurcated balanced lever fulcrumed at 101 on the hangerbracket 9 beneath the chest 4. The bifurcations engage trunnions 51 onthe said balanced hopper 5 which is balanced by the counterweight 102 onsaid lever 10.

The stock is thinned by supplying Water to the Jordan beater through theinlet pipe 12 which is controlled by needle valve 13 by the variationsof weight in the balanced controlling hopper 5. The needle valve 13 iscontrolled by lever 11 which is supported by arm 111 secured to thechest 4. 112 is the fulcrum for the lever 11 which is bifurcated at 113and engages the valve stem 131 for opening and closing the needle valve.

The lever 11 is actuated by a pin 114 on the lever 10. The arm 111yields enough to permil; the necessary actuation of the valve stem byengagement with the bifurcated end of the lever 11. i

The balanced controlling hopper 5 is supplied from the pipe 48 and isprovided with a spiral passage formed by a blade 52 very similar to thevane of a spiral conveyor which retards the flow of the stocktherethrough keeping it of even consistency and retaining it by frictionso that it is maintained substantially full. If the stock thickens itdoes not flow-so readily and at once accumulates, over-balancing thecounterweight, throwing the end of lever 11 up and opening the needlevalve 13 and at once admitting an extra supply of water through pipe12'to the supply chest 20f the Jordan.

53 is the central vent pipe in the balanced hopper 5 and insures theventing and escape of air from the contained stock. This hopper has itsbottom somewhat contracted at 54 with a discharge elbow 55 to deliverthe stock from the hopper laterally so it will be admixed with thecontents of hopper 6. The elbow 54 is directed to deliver the stream ofstock along with the stock from the overflow pipe 45.

From this description it will be observed that ifthe paper stock becomesunduly heavy it will, through the balanced controlling hopper, beaccumulated, owing to the spiral passage, otl'ering resistance so thatthe counterweight 102 will be overbalanced and the counterweight lever10 will, through pin 114 react on the lever 11 and at once open thenecdle'valve 13, which will permit water to enter the supply chest forthe Jordan heater and at once thin the stock that is being deliveredfrom the Jordan.

This action is very gradual as it should be because the stock isdelivered in as near the right consistency-as possible and the additionof a comparatively small stream corrects the same and delivers a veryeven stock to the paper machine which insures the manufacture of a sheetof substantially even weight, a thing which results in the productionofthe maximum sheet area of the weight from the paper stock as required.

It will be seen that the present structure is an improvement and advanceover the structure of my said patent in providing an effective means forretaining and supporting the stock in the counterbalanced controllinghopper. The thing is capable of complete regulation.

The adjustment of the gate 43 insures a substantially correct flow ofthe stock to the counterbalance device permitting the rest to overflowthrough pipe 45. The regulation is instantaneous, the slightestvariation in weight at once admitting a small amount of water andincreasing the same it the stock is not at once thinned to the requiredamount.

The structure is exceedingly sensitive. The maintenance of the evenweight of the sheet is very remarkable, there being no perceptiblevariation in the succeeding lengths of paper when the stock is deliveredwithin a reasonable range of requirements to the supply chest for theJordan. The structure is very compact. There is little or nothing to getout of order.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. In a stock controlling means for paper making machines, thecombination,with a Jordan heater and stutl supply box therefor of aregulating supply chest with a dam partition tliereacross with gate toregulate the overflow, an overflow pipe and a discharge pipe therefrom,a balanced hopper with spiral passage therethrough for the said paperstock from the discharge pipe, a bifurcated counterbalance levercarrying the said hopper, a water supply pipe to the stufl'. supply boxof the said Jordan, a needle valve for controlling the same, a lever foroperating said needle valve with connection to the counterbalance leverof the hopper, coacting as specified.

2. In a stock controlling means for paper making machines, thecombination of a regulating supply chest with discharge and overflow, abalanced hopper with spiral passage therethrough to receive the paperstock from the discharge, counterbalance means for supporting the same,a water supply pipe with control valve, connections from thecounterbalance lever to said valve for admitting v water to thin thestock, as specified.

In witness whereof I have hereunto set my hand.

JOHN ROBERT SPOOR.

